EFM-520 build thread

Bill:

Good to hear. If it ain't broke right?

Manny

In the parts box that was inside the stoker box are 3 short screws and nuts. Attach the door to the base. You'll see the three holes.

Yes, I see them now. The holes to attach the ash bin door are on the lip of the ash bin opening, not actually the base of the unit. Yes, the door fits and the concrete blocks do not impede its closure. Thanks for your attention to detail, Stoker-man.

Manny

Here are some updated pictures of the coal bin designed and constructed for the EFM 520 stoker boiler:









This one shows that I had to extend the doghouse to take pressure of the coal off the auger and allow no more than 3 inches of the worm into the bin per EFM specifications:





I will probably start filling it this weekend and will show one last picture of the bin full of coal with the door fully installed.

Manny

It looks like you built the bin well. If the coal is wet, is there drainage? Is it pressure-treated plywood?

Stoker:

There is a half inch clearance between the 2' x 3' concrete floor shown and the plywood for any drainage to escape the bottom of the coal bin, but I do not expect wet coal to be used. It will come from a covered pile in my yard. I also have 5 tons stored in my garage and another part of my cellar in the event I need to add to it during the heating season. I did not use pressure treated wood since I expect it to be relatively dry. In the event I start chuting it in from a truck, then I will either paint the plywood inside the coal bin and/or line it with plastic.

Thanks for your help.

Manny

Nice work Chabbo. I wish I had my unit to start on. I had been informed that the unit will be at least 2 more weeks. I heard that before. Keep up the good work and the pictures are great.

Kevin:

I honestly have to say that I don't believe I would have had the confidence to attempt a coal conversion of this magnitude without the help and support of this forum. I probably would have gone to a wood pellet stove insert or stove. I am grateful to have found this forum and know that there is support and help from some very experienced experts if I need it. I am happy to contribute what little I can toward that spirit of honest and truthful help and assistance. The pictures will keep coming as the install progresses.

Good luck to all.

Manny

Here are some updated pictures of the EFM 520 Boiler installation and coal bin:

Here is a close-up of the auger and worm in relation to the doghouse cover:



Pictures of the cabinet assembly:









Couple more to come.

Manny

Remaining pictures:



Last picture -- this one of the water to air exchangers installed in the ductwork of the return:



More pictures to come tomorrow.

Manny

Here are some updated pictures. The steel black pipe sure is slowgoing:

Here are the water to air exchangers fully installed with the ductwork back in place:



Here are the back of the water to air exchangers where the feed and return are connected:



Here is control center partially assembled:



All done until Monday -- will post more next week.

Manny

Some nice progress Manny.

My puter's been on the fritz and I just got back from a work trip. I checked the basement when I got home. The 'furnace fairy' didn't come finish my install so I guess I've got to get back to work tomorrow. I'll post some pics of my plumbing so I can get some opinions if I'm doing this right. I'm putting the whole build in the KB but I want to avoid any mistakes before I make them if at all possible. Right now I think I know just enough to be dangerous.

Why did you put the heat exchangers on the return vs. on the supply side?

e.alleg:

No room on the supply side. AC coils are in the way. Any other thoughts?

Manny

Last picture showing the coal bin filled with 5.5 tons of coal.



Manny